In her field doesn't mean that's what she researches, LLMs are loosely in her field but the methods are completely different. Computational linguistics != deep learning. Deep learning does not directly use concepts from linguistics, semantics, grammars or grammar engineering, which is what Emily was researcing for the past decades.
It's the same thing as saying a number theorist and a set theorist are in the same field cause they both work in the Math field.